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Parallel/vtkMPICommunicator.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkMPICommunicator.h,v $
  Language:  C++


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#ifndef __vtkMPICommunicator_h
#define __vtkMPICommunicator_h

#include "mpi.h"
#include "vtkCommunicator.h"
#include "vtkMPIGroup.h"

class vtkMPIController;

class VTK_PARALLEL_EXPORT vtkMPICommunicator : public vtkCommunicator
{

public:

  vtkTypeMacro( vtkMPICommunicator,vtkObject);
  
  static vtkMPICommunicator* New();

  static vtkMPICommunicator* GetWorldCommunicator();
  
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  int Initialize(vtkMPICommunicator* mpiComm, vtkMPIGroup* group);


  virtual int Send(int* data, int length, int remoteProcessId, int tag);
  virtual int Send(unsigned long* data, int length, int remoteProcessId,
                   int tag);
  virtual int Send(char* data, int length, int remoteProcessId, int tag);
  virtual int Send(unsigned char* data, int length, int remoteProcessId, int tag);
  virtual int Send(float* data, int length, int remoteProcessId, 
                   int tag);
  virtual int Send(double* data, int length, int remoteProcessId, 
                   int tag);
#ifdef VTK_USE_64BIT_IDS
  virtual int Send(vtkIdType* data, int length, int remoteProcessId, 
                   int tag);
#endif
  virtual int Send(vtkDataObject* data, int remoteProcessId, int tag)
    { return this->vtkCommunicator::Send(data, remoteProcessId, tag); }
  virtual int Send(vtkDataArray* data, int remoteProcessId, int tag)
    { return this->vtkCommunicator::Send(data, remoteProcessId, tag); }

//BTX

  class VTK_PARALLEL_EXPORT Request
  {
  public:
    int Test();
    void Cancel();
    void Wait();
    MPI_Request Req;
  };

//ETX


  int NoBlockSend(int* data, int length, int remoteProcessId, int tag,
                  Request& req);
  int NoBlockSend(unsigned long* data, int length, int remoteProcessId,
                  int tag, Request& req);
  int NoBlockSend(char* data, int length, int remoteProcessId, 
                  int tag, Request& req);
  int NoBlockSend(float* data, int length, int remoteProcessId, 
                  int tag, Request& req);


  virtual int Receive(int* data, int length, int remoteProcessId, 
                      int tag);
  virtual int Receive(unsigned long* data, int length, 
                      int remoteProcessId, int tag);
  virtual int Receive(char* data, int length, int remoteProcessId, 
                      int tag);
  virtual int Receive(unsigned char* data, int length, int remoteProcessId, 
                      int tag);
  virtual int Receive(float* data, int length, int remoteProcessId, 
                      int tag);
  virtual int Receive(double* data, int length, int remoteProcessId, 
                      int tag);
#ifdef VTK_USE_64BIT_IDS
  virtual int Receive(vtkIdType* data, int length, int remoteProcessId, 
                      int tag);
#endif
  virtual int Receive(vtkDataObject* data, int remoteProcessId, int tag)
    { return this->vtkCommunicator::Receive(data, remoteProcessId, tag); }
  virtual int Receive(vtkDataArray* data, int remoteProcessId, int tag)
    { return this->vtkCommunicator::Receive(data, remoteProcessId, tag); }


  int NoBlockReceive(int* data, int length, int remoteProcessId, 
                     int tag, Request& req);
  int NoBlockReceive(unsigned long* data, int length, 
                     int remoteProcessId, int tag, Request& req);
  int NoBlockReceive(char* data, int length, int remoteProcessId, 
                     int tag, Request& req);
  int NoBlockReceive(float* data, int length, int remoteProcessId, 
                     int tag, Request& req);

//BTX

  friend class vtkMPIController;

//ETX

protected:

  vtkSetObjectMacro(Group, vtkMPIGroup);


  vtkSetMacro(KeepHandle, int);
  vtkBooleanMacro(KeepHandle, int);

  static vtkMPICommunicator* WorldCommunicator;

  void InitializeCopy(vtkMPICommunicator* source);

  void CopyFrom(vtkMPICommunicator* source);

  void Duplicate(vtkMPICommunicator* source);

  MPI_Comm* Handle;
  vtkMPIGroup* Group;

  int Initialized;
  int KeepHandle;

  vtkMPICommunicator();
  ~vtkMPICommunicator();

 private:
  static int CheckForMPIError(int err);

private:
  vtkMPICommunicator(const vtkMPICommunicator&);  // Not implemented.
  void operator=(const vtkMPICommunicator&);  // Not implemented.
};


#endif //  __vtkMPICommunicator_h

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